地震-滑坡涌浪疊加下高拱壩動(dòng)力響應(yīng)與損傷研究

打開文本圖片集

關(guān)鍵詞：地震-滑坡涌浪耦合；高拱壩；動(dòng)力響應(yīng)；連續(xù)損傷模型中圖分類號(hào)：X171.1 文獻(xiàn)標(biāo)志碼：A doi：10.3969/j.issn.1000-1379.2025.07.005引用格式：，，.地震-滑坡涌浪疊加下高拱壩動(dòng)力響應(yīng)與損傷研究[J].人民黃河，2025，47（7）：28-34.

Study on Dynamic Response and Damage of High Arch Dam Under Earthquake-Landslide Surge Superposition

GUO Jinjun，ZHOU Pizhi，HU Shaowei

（School of Water Conservancy and Transportation，Zhengzhou University，Zhengzhou 45Ooo1，China）

Abstract：Strongearthquakeswillgreatlyducethstabiltoftheresevorslopeadasiliducelandldegeologicaldisastesheuperpositionofearthquakeandlandslidesurgeloadgreatlytreatens thesafetyofthedambody.Inordertoexplore thedynamicresponseand damageevoutionofhigachdmundertesuperpositioofartquake-landslidesurgethispapertokaighchdmasteet，uilt afinefiniteeementodel，eterndecaluatomodeloftquake-ladslideugeload，ndaalydteodalatiois placementresponsecharacteriticsnddamageevolutiontrendofarchdamundermultipleworkingcondtions.Theresultsshowthatthehydrodynamic added mass significantly reduces the wet modal frequency of the arch dam by 1 8%-23% ，and the high-order vibration modes change significantly. When the earthquake and surge are superimposed， the peak displacement Rd of the midpoint of the vault is positively corelatedwithtepakacelerationoftearthquakeandtemaximumsurgeeightWhenthepeakaceleratioof teearthquakeincreases from 0.2g to 0.6g ， Rd increases by 89.7% . The maximum displacement time under different working conditions is affcted by many factors.Thedamagedegreeofdambodyvariesgreatlyunderdiferentworkingconditions.Thedamageofupstreamsurfaceissensitivetothe change of surge height. When the surge height is different by 40m ，the weighted damage area ratio of upstream surface to RUWA changes by （204 27.1% .From conditionone to condition three，the weighted damage area ratio of cantilever surface is increased from 9.99 % to 25.76% compared with RFWA ，and thedam body haspenetrating cracks.The damage dissipation energy increasessharply with the increase of load strength.

Key words： earthquake-landslide surge coupling; high arch dam； dynamic response ; continuum damage model

0 引言

高拱壩是水利工程中關(guān)鍵水工建筑物，其結(jié)構(gòu)安全性與服役可靠性直接影響下游區(qū)域人民生命財(cái)產(chǎn)安全及流域生態(tài)環(huán)境穩(wěn)定性。（剩余9859字）